[DirectX 8.1 C/C++ Programmer's Reference] D3DXToRadian (65.8986175115207%)

DirectX 8.1 (C++) > DirectX Graphics > Reference > Direct3DX C/C++ Reference > Macros

[DirectX October 2006 Documentation] D3DXToRadian (61.6129032258064%)

DirectX Graphics > Direct3D 9 > Reference > D3DX Reference > Macros